Condition: Power supply voltage: DC9V12V Model: DIY Kit Features: audio spectrum analyzer, audio level indicator Key benefits Provides visual insight into the frequency content of audio signals, helping you identify tone balance and spectral balance needs. Includes an audio level indicator to monitor signal strength and support proper gain staging. As a DIY Kit, it is designed for handson assembly and within your audio projects. What it enables Quick assessment of which frequencies are present and their relative levels, aiding troubleshooting and signal optimization. Simple monitoring of peak levels to prevent distortion and ensure clear playback or recording. Use scenarios Home studio or project setup: place in your workflow to analyze tracks during mixing or mastering and to verify level consistency across sessions. Electronics hobby project: integrate into DIY audio or DSP experiments to observe how circuit changes affect the spectrum and levels. Educational environment: use as a teaching aid in workshops or classrooms to demonstrate spectrum analysis and level indicators in realtime.